Hands down, the best program for quant

The only negative thing I have to say about this program is that I only found it after my 3rd GMAT attempt. In the mean time, I got my verbal on track but saw that my quant score fluctuating heavily (basically from 33-45). I realized that my quant knowledge was spotty. Meaning, in some topics I could answer 700+ questions with ease while in others I failed <550 type of questions. While it is very hard to identify the weak spots, I was looking for a comprehensive math program that builds up the required quant knowledge gradually, starting from scratch.
That is exactly what TTP does, it has a user friendly and modern interface and an insanely well structured curricula as well as fantastic analysis functions. It made me practice a lot, often >150 quant questions a day and only allows you to progress once you master a topic. While some concepts I knew very well it revealed my weak spots merciless. I felt more confident day by day and more importantly, my scores improved consistently and stopped fluctuating. Getting rid of these fluctuations is key in the GMAT and maximizes your chances of getting the score you want.

In my case, I had to stop this program after completing half of it. However, the bottom up structure of the curricula (you learn basics in the beginning that build your skills for later topics) already made me feel better prepared, not to mention that I had practiced ~2k questions with ttp in 3 weeks. I scored a 44 in quant and it just made me wonder what other score would have been possible if I would have finished the entire program.

Lastly, during my GMAT preparations, I have learned that there is not one course that suits everyone so bear in mind while one program might resonate with me and the way I learn, it might not work very well for someone else. As I mentioned in my GMAT debrief, a good way to understand whether this is the right course for you is to check the expert solutions / replies on the gmat forum. I found the answers from scott (founder of ttp) always very helpful.